Pith Number

pith:YJQFNPD2

pith:2012:YJQFNPD2VECSVHRQNIWYINSOBO

not attested not anchored not stored refs pending

Constructive Provability Logic

Bernardo Toninho, Robert J. Simmons

arxiv:1205.6402 v1 · 2012-05-29 · cs.LO · cs.PL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YJQFNPD2VECSVHRQNIWYINSOBO}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:54:39.990701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c26056bc7aa9052a9e306a2d84364e0b9dbf28c267dadd4949701c780d7ec3eb

Aliases

arxiv: 1205.6402 · arxiv_version: 1205.6402v1 · doi: 10.48550/arxiv.1205.6402 · pith_short_12: YJQFNPD2VECS · pith_short_16: YJQFNPD2VECSVHRQ · pith_short_8: YJQFNPD2

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/YJQFNPD2VECSVHRQNIWYINSOBO \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c26056bc7aa9052a9e306a2d84364e0b9dbf28c267dadd4949701c780d7ec3eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d125797bb571cb983f83902715d7794a8fc00623dac4854e466c0596a5d8708",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-05-29T15:53:50Z",
    "title_canon_sha256": "aa22f12e91efca11d9bbda707f89dc1af6a4ec44757c6db02ec6f14ebf0ac1f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.6402",
    "kind": "arxiv",
    "version": 1
  }
}